EP1278717B1 - Eintopfsynthese von 3-cyclopropylamino-2- 2,4-dibromo-3-(difluoromethoxy)benzoyl|-2-propensäure alkylester als nützliches zwischenprodukt für antibakterielle quinolon-arzneistoffe - Google Patents

Eintopfsynthese von 3-cyclopropylamino-2- 2,4-dibromo-3-(difluoromethoxy)benzoyl|-2-propensäure alkylester als nützliches zwischenprodukt für antibakterielle quinolon-arzneistoffe Download PDF

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Publication number
EP1278717B1
EP1278717B1 EP01908049A EP01908049A EP1278717B1 EP 1278717 B1 EP1278717 B1 EP 1278717B1 EP 01908049 A EP01908049 A EP 01908049A EP 01908049 A EP01908049 A EP 01908049A EP 1278717 B1 EP1278717 B1 EP 1278717B1
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EP
European Patent Office
Prior art keywords
dibromo
difluoromethoxy
ethyl
methyl
alkyl
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP01908049A
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English (en)
French (fr)
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EP1278717A1 (de
EP1278717A4 (de
Inventor
Prosenjit Bose
Naresh Kumar
Taro Kiyoto
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Ranbaxy Laboratories Ltd En Toyama Chemical Co
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Ranbaxy Laboratories Ltd
Toyama Chemical Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C227/00—Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton
    • C07C227/14—Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton from compounds containing already amino and carboxyl groups or derivatives thereof
    • C07C227/16—Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton from compounds containing already amino and carboxyl groups or derivatives thereof by reactions not involving the amino or carboxyl groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C229/00—Compounds containing amino and carboxyl groups bound to the same carbon skeleton
    • C07C229/02—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton
    • C07C229/34—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton containing six-membered aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2601/00—Systems containing only non-condensed rings
    • C07C2601/02—Systems containing only non-condensed rings with a three-membered ring

Definitions

  • the present invention relates to a new and industrially advantageous one-pot process for the preparation of alkyl 3-cyclopropyl amino-2-[2,4-dibromo-3-(difluoromethoxy) benzoyl]-2-propenoates in which R represents methyl or ethyl, which are valuable intermediates for the production of highly active antibacterial quinolone medicaments.
  • the general method described in this patent includes, reaction of the compound of the following formula: with a halogenating agent such as thionyl chloride to obtain acid chloride of the following formula: which on reaction with metal salt of malonic ester of the following formula: Na / KOOCCH 2 COOR FORMULA IV wherein R is the same as defined above, in the presence of magnesium chloride at a temperature of about 45°C.
  • a halogenating agent such as thionyl chloride
  • the present invention relates to a process for the preparation of alkyl3-cyclopropylamino-2-[2,4-dibromo-3-difluoromethoxy) benzoyl]-2-propenoate of Formula I, wherein R is methyl or ethyl comprising reacting 2,4-dibromo-3-(difluoromethoxy)benzoic acid of Formula II, with a halogenating agent to get a corresponding acid chloride of Formula III, which on reaction with ester of 3,3-dialkyl amino acrylate of the following formula: wherein R 1 is methyl or ethyl, in a suitable solvent in the presence of an organic base to give alkyl-3,3-dialkylamino-2[2,4-dibromo-3-difluoromethoxy) benzoyl]-2-propenoate of Formula Vl wherein R and R 1 are methyl or ethyl which on treatment with cyclopropylamine affords the product
  • the compound of Formula II is reacted with thionyl chloride to provide an acid chloride of Formula III following a process known in the prior art.
  • the acid chloride is then reacted with methyl/ethyl ester of 3,3-dimethyl/diethylamino acrylate of Formula VI (R and R 1 are methyl or ethyl) in a suitable solvent in the presence of an organic base at a selected temperature within the range of 40-80°C, preferably, 50-70°C during a period of one to several hours.
  • the suitable solvent is selected from the group comprising of aromatic solvents, chlorinated solvents ester solvents and mixture(s) thereof.
  • the solvents are selected from the group comprising benzene, toluene, xylenes, chloroform, dichloroethane, dichloromethane methyl acetate, butyl acetate, ethyl acetate or mixture(s) thereof.
  • the suitable organic base is selected from the group comprising triethylamine, trimethyl amine, picolines, pyridine and pyridine derivatives.
  • the reaction mixture is then cooled and poured into water.
  • the organic layer contains the compound of Formula VI wherein R 1 is methyl or ethyl and is taken as such for reaction with cyclopropylamine at a selected temperature within the range of 0-30°C, preferably 5-10°C for 0.5 to several hours.
  • the desired compound methyl/ethyl 3-cyclopropylamino-2-[2,4-dibromo-3-(difluoromethoxy) benzoyl]-2-propenoate of Formula I is isolated by conventional methods.
  • reaction temperature was slowly increased to 60-65°C and stirred the reaction mixture for about 24 hours. Cooled the reaction mixture to 30°C, added water (20ml) and stirred for about 10 minutes. The organic layer was separated, cooled to about 5°C and cyclopropylamine (1.82gm) was added to it drop-wise maintaining temperature at 8-10°C during a period of about 10 minutes. Stirred the reaction mixture for about 2 hours, solvent was removed under vacuum (- 80% of the original amount) and cooled the reaction mixture to about 20°C. The solid separated was filtered and dried to afford ethyl 3-cyclopropylamino-2-[2, 4-dibromo-3-(difluoromethoxy) benzoyl]-2-propenoate (10gm).

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

Claims (10)

  1. Verfahren zur Herstellung von 3-Cyclopropylamino-2-[2-4-dibromo-3-(difluoromethoxy) benzoyl]-2-propenoat der folgenden Formel:
    Figure imgb0012
     wobei R Methyl oder Ethyl ist, umfassend die Umsetzung von 2,4-Dibromo-3-(difluoromethoxy)benzoesäure der folgenden Formel:
    Figure imgb0013
     mit einem Halogenierungsmittel, um ein korrespondierendes Säurechlorid der folgenden Formel zu erhalten:
    Figure imgb0014
     welches mit Umsetzung mit einem Alkylester von 3,3-Dialkylaminoacrylat der folgenden Formel:
    Figure imgb0015
     wobei R1 Methyl oder Ethyl ist und R wie oben definiert ist, in einem geeigneten Lösungsmittel in der Anwesenheit einer organischen Base, um Alkyl-3,3-dialkylamino-2-[2,4-dibromo-3-(difluoromethoxy)benzoyl]-2-propenoat der folgenden Formel zu ergeben:
    Figure imgb0016
     wobei R und R1 Methyl oder Ethyl sind und R und R1 wie oben definiert sind, welches bei der Behandlung mit Cyclopropylamin das Produkt nach Formel I ergibt.
  2. Verfahren nach Anspruch 1, wobei das Halogenierungsmittel Thionylchlorid ist.
  3. Verfahren nach Anspruch 1, wobei der Alkylester von 3,3-Dialkylaminoacrylat der Methylester von 3,3-Dimethylaminoacrylat ist.
  4. Verfahren nach Anspruch 1, wobei der Alkylester von 3,3-Dialkylaminoacrylat der Ethylester von 3,3-Diethylaminoacrylat ist.
  5. Verfahren nach Anspruch 1, wobei das Lösungsmittel ausgewählt ist aus einer Gruppe enthaltend aromatische Lösungsmittel, chlorierte Lösungsmittel, Esterlösungsmittel und Mischungen derselben.
  6. Verfahren nach Anspruch 5, wobei das Lösungsmittel ausgewählt ist aus der Gruppe enthaltend Benzol, Toluol, Xylole, Chloroform, Dichlormethan, Dichlorethan, Methylacetat, Butylacetat, Ethylacetat und Mischungen derselben.
  7. Verfahren nach Anspruch 1, wobei die organische Base ausgewählt ist aus der Gruppe enthaltend Triethylamin, Trimethylamin, Picolin(e), Pyridin und Pyridinderivate.
  8. Verfahren nach Anspruch 1, wobei die Reaktionstemperatur in dem Bereich von 40 bis 80°C liegt.
  9. Verfahren nach Anspruch 8, wobei die Reaktionstemperatur in dem Bereich von 50 bis 70°C liegt.
  10. Verwendung der Verbindung nach Formel I, hergestellt in dem Verfahren nach Anspruch 1, zur Synthese von Quinolon-Arzneimitteln.
EP01908049A 2000-03-07 2001-03-07 Eintopfsynthese von 3-cyclopropylamino-2- 2,4-dibromo-3-(difluoromethoxy)benzoyl|-2-propensäure alkylester als nützliches zwischenprodukt für antibakterielle quinolon-arzneistoffe Expired - Lifetime EP1278717B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IN196DE2000 2000-03-07
INDE200000 2000-03-07
PCT/IB2001/000316 WO2001066512A1 (en) 2000-03-07 2001-03-07 One-pot synthesis of alkyl 3-cyclopropylamino-2-[2,4-dibromo-3-(difluoromethoxy)benzoyl]-2-propenoate as a useful intermediate for antibacterial quinolone medicaments

Publications (3)

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EP1278717A1 EP1278717A1 (de) 2003-01-29
EP1278717A4 EP1278717A4 (de) 2005-06-08
EP1278717B1 true EP1278717B1 (de) 2007-06-06

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Country Status (9)

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US (1) US6835848B1 (de)
EP (1) EP1278717B1 (de)
JP (1) JP4751557B2 (de)
KR (1) KR100763077B1 (de)
CN (1) CN1202075C (de)
AT (1) ATE364036T1 (de)
AU (1) AU3590801A (de)
DE (1) DE60128797D1 (de)
WO (1) WO2001066512A1 (de)

Families Citing this family (7)

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Publication number Priority date Publication date Assignee Title
US7759362B2 (en) 2004-04-21 2010-07-20 Institut Of Medicinal Biotechnology Chinese Academy Of Medical Sciences Quinolonecarboxylic acid compounds, preparation methods and pharmaceutical uses thereof
CN1244582C (zh) * 2004-04-21 2006-03-08 中国医学科学院医药生物技术研究所 喹诺酮羧酸类化合物及其制备方法和医药用途
KR200457934Y1 (ko) * 2010-10-26 2012-01-12 주식회사 삼진엘앤디 등기구 마운팅 구조
WO2013157018A1 (en) 2012-04-18 2013-10-24 Indian Institute Of Technology Madras A process for the preparation of the core structure in quinolone and napthyridone class of antibiotics
CN105801482B (zh) * 2016-04-18 2018-06-22 浙江中欣氟材股份有限公司 一种1-环丙基-4-氧代-7-溴-8-二氟甲氧基-1,4-二氢喹啉-3-羧酸乙酯的制备方法
CN105777631B (zh) * 2016-04-18 2018-06-29 浙江中欣氟材股份有限公司 一种1-环丙基-4-氧代-7-溴-8-二氟甲氧基-1,4-二氢喹啉-3-羧酸乙酯的合成方法
CN114716373B (zh) * 2022-04-14 2023-01-10 内蒙古源宏精细化工有限公司 一种加替沙星环合酯的制备方法

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JPH0784423B2 (ja) * 1987-06-18 1995-09-13 宇部興産株式会社 ３−アミノ−２−置換ベンゾイルアクリル酸誘導体
JPH05194336A (ja) * 1992-01-14 1993-08-03 Kyorin Pharmaceut Co Ltd アミノアクリル酸誘導体
JP2918134B2 (ja) * 1992-05-15 1999-07-12 宇部興産株式会社 ３−ジアルキルアミノ−２−置換ベンゾイルアクリル酸誘導体
JPH0616642A (ja) * 1992-07-02 1994-01-25 Katayama Seiyakushiyo:Kk キノリンカルボン酸誘導体の製造方法
CA2196271C (en) 1994-08-12 2007-01-09 Yozo Todo Quinolone- or naphthyridonecarboxylic acid derivative or salt thereof
KR100565362B1 (ko) * 1997-10-27 2006-03-30 도야마 가가쿠 고교 가부시키가이샤 7-이소인돌린-퀴놀론 카복실산 유도체 및 그 중간체의 제조방법 및 7-이소인돌린-퀴놀론 카복실산 유도체의 염, 그의 수화물 및 이들을 활성성분으로 함유하는 조성물
ES2203254T3 (es) 1998-11-18 2004-04-01 Asahi Glass Company Ltd. Derivados de acido aminoacrilico y procedimiento de produccion correspondiente.
EP1167344A4 (de) * 1999-03-17 2004-06-16 Daiichi Seiyaku Co Verfahren zur herstellung von 5-amino-8-alkylchinoloncarbonsäure-derivate und zwischenprodukte in ihrer herstellung

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US6835848B1 (en) 2004-12-28
JP2003534243A (ja) 2003-11-18
JP4751557B2 (ja) 2011-08-17
DE60128797D1 (de) 2007-07-19
ATE364036T1 (de) 2007-06-15
EP1278717A1 (de) 2003-01-29
CN1427815A (zh) 2003-07-02
WO2001066512A1 (en) 2001-09-13
AU3590801A (en) 2001-09-17
US20040267019A1 (en) 2004-12-30
EP1278717A4 (de) 2005-06-08
KR100763077B1 (ko) 2007-10-04
CN1202075C (zh) 2005-05-18
KR20030017473A (ko) 2003-03-03

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